7Li Quadrupole Splitting Constants for Dimeric Lithium Phenolates in Weakly Polar Aprotic Solvents

✍ Scribed by L. M. Jackman; D. Çizmeciyan

• Book ID: 101255109
• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 311 KB
• Volume: 34
• Category: Article
• ISSN: 0749-1581
• DOI: 10.1002/(sici)1097-458x(199601)34:1<14::aid-omr821>3.0.co;2-o

✦ Synopsis

The 'Li quadrupole splitting constants [ QSC = (1 + q2/3)"2(e2Qqz,/h)] for di-and tetra-solvated dimeric lithium 2,6-dimethyl-and 2,6-di-tert-butylphenolates were determined from measurements of 'Li and I3C spin lattice relaxation times. After correcting for anisotropic rotational diffusion, the estimated values for the disolvated dimers are 270-280 kHz in comparison with ca. 160 kHz for the tetrasolvated species. The values of QSC are useful for determining the degrees of solvation in solutions of dimeric organic lithium compounds in pure solvents.